Dresden 2011 – wissenschaftliches Programm

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KR: Fachgruppe Kristallographie

KR 5: Poster Multiferroics (Joint Session of MA, DF, DS, KR, TT)

KR 5.78: Poster

Dienstag, 15. März 2011, 10:45–13:00, P2

Layer resolved magneto-optical Kerr effect magnetometry and domain studies of polycrystalline interlayer exchange coupled NiFe-Ru-Co films — •Thomas Strache and Jeffrey McCord — Institut für Ionenstrahlphysik und Materialforschung, Helmholtz-Zentrum Dresden - Rossendorf, PF 510119, 01314 Dresden, Germany

The magnetization reversal of interlayer exchange coupled NiFe-Ru-Co thin films is studied as a function of coupling strength and ratio of saturation magnetization values of both ferromagnetic layers. These quantities are changed by means of homogeneous ion irradiation, resulting in an interfacial mixing and depth selective doping in the sandwich structures. Both parameters can be varied separately by the choice of the ion species and the ion acceleration energy. In order to characterize the individual reversal mechanisms, layer resolved magnetometry and domain imaging are performed. The layer selectivity is obtained by making use of the phase differences of the Kerr signals, originating from different depths in the samples.